Experimental investigation of immersed granular collapse in viscous and inertial regimes

doi:10.1063/5.0067485

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	Experimental investigation of immersed granular collapse in viscous and inertial regimes
	Sun YH(孙云辉)1; Zhang WT(张炆涛)2,3 ; An Y(安翼)2 ; Liu QQ(刘青泉)1 ; Wang XL(王晓亮)1
通讯作者	Liu, Qingquan(liuqq@bit.edu.cn) ; Wang, Xiaoliang(wangxiaoliang36@bit.edu.cn)
发表期刊	PHYSICS OF FLUIDS
	2021-10-01
卷号	33 期号:10 页码:12
ISSN	1070-6631
摘要	This paper presents an experimental investigation of immersed granular collapse with an initially dense packing, mainly focusing on the collapse characteristics of different flow regimes and the influence of the initial aspect ratio. A novel experimental setup and imaging method are introduced to simultaneously observe the motion of the particles and the fluid. The collapse dynamics, including the collapse acceleration, steady propagation velocity, and collapse duration, are analyzed based on the front propagation. It is found that the collapse procedures in the inertial and viscous regimes differ significantly, with the transitional regime possessing some unique characteristics of both. The inertial regime exhibits a faster collapse process, sharper final deposition, and a depression near the right wall in the case of high columns. The viscous regime collapses from the upper-left corner, from where particles drop to the bottom and form the flow front in advance of the particles initially at the bottom, and exhibits a triangular final deposition. The inertial regime exhibits swirling fluid motion, which helps the granular transport, whereas the fluid flow in the viscous regime mainly follows the granular flow. The collapse regime characteristics are more pronounced in higher columns.
DOI	10.1063/5.0067485
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000710668300005
关键词[WOS]	SURFACE FLOWS ; FLUID ; MASS
WOS研究方向	Mechanics ; Physics
WOS类目	Mechanics ; Physics, Fluids & Plasmas
资助项目	National Natural Science Foundation of China[12032005] ; National Natural Science Foundation of China[12172057]
项目资助者	National Natural Science Foundation of China
论文分区	一类/力学重要期刊
力学所作者排名	2
RpAuthor	Liu, Qingquan ; Wang, Xiaoliang
引用统计	被引频次：7[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/87775
专题	流固耦合系统力学重点实验室
作者单位	1.Beijing Inst Technol, Sch Aerosp Engn, Beijing 100081, Peoples R China; 2.Chinese Acad Sci, Inst Mech, Key Lab Mech Fluid Solid Coupling Syst, Beijing 100190, Peoples R China; 3.Midea Corp Res Ctr, Foshan 528311, Guangdong, Peoples R China
推荐引用方式 GB/T 7714	Sun YH,Zhang WT,An Y,et al. Experimental investigation of immersed granular collapse in viscous and inertial regimes[J]. PHYSICS OF FLUIDS,2021,33,10,:12.
APA	孙云辉,张炆涛,安翼,刘青泉,&王晓亮.(2021).Experimental investigation of immersed granular collapse in viscous and inertial regimes.PHYSICS OF FLUIDS,33(10),12.
MLA	孙云辉,et al."Experimental investigation of immersed granular collapse in viscous and inertial regimes".PHYSICS OF FLUIDS 33.10(2021):12.

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